US1243250A - Carbureter. - Google Patents

Description

g5. G. BRINKMAN.

cARBuRETER APPUCATION FILED MAR.23.1916.

ntente Got. 16, 12N? 'sex and State of New Jersey,

1; Ieine denn onreine.

SEBASTIAN G. BRINKMNQ'OF EQRBS, HEW' JERSEY.

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To all wwm t may cof/wem.

innss'rmn G. Bienn- States, and u resident of Fords, in the county of Middlehave invented 'certain new and useful Improvements in Be it known that l,

specification. 'f'fhis invention relates to a oarbureter of Carburelers7 of which the following a Vnovel construction, in which the ycuuin 'or suction induced by the engine for drawing' up vthe air will induce a second Veeuurn or suction at the mouth ot the oil nozzle.

yThis second yacuuin is of such intensity that is will liiit the oil to a great height, so that the vseine may be drawn directly from the tank, and that consequently the intervening oilup and lioat Valve mechanism heretofore" generally employed,l may be dispensed with. The inyention also relates to' various other features of construction all as more fully pointed out in the specification 'and appended claims.

l In the accompanying drawing:

."{Figure 1 is a vertical longitudinal sectionfot' :i carbureter embodying my invention;

Kllligrfl is a horizontal section on line 2--2 Fig. 1;

:i (Fig. 3 a longitudinal section through the oil nozzle, and .i Fig. l a diagram 'showing` the carburetor installed in a motor vehicle.

Upon the upright .hell or casing 1 of the carburetor isniounted a ilanged coller 2 leading tc. the manifold and furnished with u: throttle valve 3 es usual0 into thelower end of shell 1, there extends an oil pipe that is centered Within theshell, by means ofv a plurality ot radially disposed tubular ducts or branches 5. These branches are inclined upwardly from the pipe toward the shell3 and open into the inner upwardly inclined Wall 0 of an oil chmnber 7' the'outer Wall of which isornied by the correspondH ingly Vinclined lowermost section 8 of shell 1.A lipe el passes through the 'apertured elsequently to the shell. It will be seen 'thaty bythe construction described, the air enter ing through pipe l0 is 'free to be drawn upwardly between ducts 5 into the lower'tapering portion of shell 1 which is encein- Speeication of Letters Patent.

19., by means of which Patented @on lt'i, Y.'

Application filed March 23, i916. Serial No, 86,965.

passed by oil chamber i, and thence .into tne upper portion of the shell, such upper pen tion being foi-ined of an outwardly flaring section 13, so that the shell is here Venturishapcd. At the top ot outwardly daring section 13, the shell is further provided With an inwardly inclined. section 14.

rlhe oil chamber 7 which is very narrow in cross section, inclines inwardly from bottoni to top,y end with an inwardly opening circular or continuous annular nozzle 15. This nozzle is formed by pronounced inward bends or deiections 16, 17 oi? the wells 6, 8 of churn bei' 7, directly beneath the lower end of section 13, so that in this way7 the i'iozzle is arranged transversely to the oi Vthe cnrluireter, and consequently discharges the oil at the neck ior led between the sec-tions S end 13, at or at about right ingles to the flow of air. Byinulting the nozzle of an-` nular forni, there is'ebt:lined7 o. contiiiuons discharge slit of nxax'ixnuin length so that the tuel will be sucked trom the entire circle ot the nozzle by. the air current flowing; through the neck oi' the Venturi-shaped shell, thus preventing the lorination ot inertspnces at the nozzle. 4 v

ln elineinent with pipe il, tl ere extends into the upper portion of shell l, a tubular Support 20 having' a stepped bore, and adapted for the correspondingly stepped spindle 2i ot a tapering needle valve This valve depends into oil ytube und passes through a port part of albushing 9.4i. encompassed by said tube and connected et its lower end by a, couiiliine' to the oil tube lil. Bushing 24 .*ertica-lly adjiistahle,y its lower 'threaded end being engaged by n hand nut 2G which is held against vertical displacement by a flange Q7 of nut 12 t iet enters u peripheral groom ot nut Thus by turni ng the latter, bushing' 24, may be or lowered to correspondingly reduce or increase the clearance of port 23, a packing Q8 serving' to keep the parts tight. The clearance of port 23-` is considerably less than the urea of nozzle foi-ined Within the upper,

and is furnished lit its upper with an increase or decrease of the enginespeed, and will thus controlithe sizeof the annular air passage formed between its belly and the neck of. the shell l into which nozzle l5 opens. 1With all positions of the governor however, this` air passage will always remain the narrowest free spaccvwithin the body of the shell, so that the an' will obtain its maximum pressure and velocity during its flow across the annular .nozzle l5. By the rise and fall or the governor, the richness of the mixture is increased with the speed of the engine in the manner required. ln order to prevent an abrupt up and down movement of the governor, spindle 2l is provided with an outwardly extending rib 0 engaging a" spiral groove 8l of steep pitch formed on the inner face of tube 20. Thus as the governor rises or falls it will turn on its axis, so that the speed of its movement is checked by the play of the rib 30 within groove 3l,

The correlation of the parts is such' that evenA at the lowest position of the governor, there is still a. narrow air port formed, opposite nozzle 15, so that an air current will be free to flow around the minimum speed of the engine.

ln operation, the suction of the engine, wilhinduce an` the shell, which, obtains its maximum force at the neck of the shell. 1n this way, a vacuum will be formed,j

which has a strong sectional at the nozzle, el'ect on the fuel. This suctional .eect bieing greatly intensified at the fuel-controlling port (owing ance) produces such a forceful lifting effect that the fuel may be raised into the carbureter through a considerable height or distance. The air and fuel will. commingle at the nozzle, and will then be thoroughly interinixed in the gradually widening section 13, so as to form a homogeneous mixture, which mixture will by the contracted section 14, be .delivered to the manifold. inasmuch by my invention, the fuel may be drawn by the suction of the engine directly into the carbureter with great force, l am enabled to entirely do away with the oil cup heretofore generally employed, thus ing and cheapening the construction, and

objections inherent in oil cups. As illustrated diagrammatically in F ig. ll, the fuel is drawn from a lower level fuel tank 18, by a comparatively long pipe i9 directly, or without the interposition of an oil cup, into the lower end of the carbureter shel Iv claim:

l. fr carbureter comprising a VenturishapedV shell, having a. contracted neck, a

governor at the.

` f nozzle and forming upward flow of air Within as has already been stated,

to the diderencedn cleargreatly simplifyfuel chamber having an inwardly directed.

annular nozzle at said neck, said nozzle eX- tending at substantially right angles to the axis of the shell, and a bulged governor movable within the shell across said nozzle and forming a restricted air passage therebetween, said governor controlling the width of said passage.

2. A carburetor comprising a Venturishaped shell having a contracted neck, a fuel chamber having an inwardly directed nozzle at said neck, said nozzle extending at substantially right angles to the axis of the shell, a bulged governor movable within the shell across said nozzle and forming a restricted air passage therebetween, and a fuel inlet port for the fuel chamber, the clearance of said port being considerably less than' the area of the nozzle, whereby the suction produced by the air at the nozzle is intensified at said port.

3. A carburetor comprising a Venturishaped shell having a contracted neck, a fuel f chamber having an inwardly direc-ted annular nozzle extending at substantially right angles to the axis of the shell, a bulged governor movable within the shell across said a restricted air passage therebetween, a fuel inlet port for the fuel chamber, the clearance of said port ybeing considerably less than the area of the nozzle, and a fuel tank communicating vdirectly with the shell.` i

4. A carburetor comprising an upright shell having an inwardly inclined lower section, an outwardly inclined upper section, a contracted neck formed between said sections, an oil chamber extending.` along the lower inwardly inclined section, said oil cl1 amber having nozzle that opens into the Ashell at said neck at substantially righi 1ngles to the axis of the shell, an oil tube -eX- tending axially through the shell and connected to said chamber, a valve seat adjustable within said tube, a governor mounted on said tube and slidable within the neck, said governor forming an upright air passage across the nozzle, and a needle valve mounted within the'tube and engaging said valve seat.

, 5. A carbureter comprising a shell, anoil pipe, an oil chamber extending along the wall of the shell and having an inwardly deflected annular nozzle, means for connecting the oil pipe with the oil chamber, a tubular support within the shell, a needle valve that projects into the oil pipe and has a spindle mounted in the-tubular support, a governor carried by the spindle andslidable 'on the support, and means for rota ting the spindle. i

SEBASTIAN G, BRINKMAN.

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